Cheese-grinding mill.



L. DONISI.

cnnssn enmmm MILL.

APPLICATION FILED JULY 2, 1913. I 1,106,931, Patented Aug. 11,1914.

2 SHEETS-SHEET 1.

11 mm W 41 ki E":

L. DONISI.

CHEESE GRINDING MILL. APPLICATION FILED JULY 2, 1913. 1,1 0 ,93 1, Patented Aug.11,1914.

2 SHEETS-SHEET 2.

4 BY I I W M V AITOR/VE TIIL NORRIS PETERS 60.. F'HOTO-LITHO., WASHINGTON, D. C:

3 i I i LUIGI DONISI, OF NEW YORK, N. Y.

CHEESE-GRINDING MILL.

To all whom it may concern:

Be it known that 1, Inner DoNIsI, a subject of the King of Italy, and resident of the city of New York, in the county of New York and State of New York, have invent ed certain new and useful Improvements in Cheese-Grincling Mills, of which the follow ing is a specification.

The present invention relates to a cheese grinding mill.

One of the objects of the invention is to provide a simple, convenient and practical mill for grinding and disintegrating cheese or other material, which will operate with great rapidity, thoroughly disintegrate the material and avoid liability of any portion of the mill becoming clogged.

Another object of the invention is to devise a mill of this type which can be manufactured on a commercial scale, or in other words one which is not so diflicult to produce as to be beyond the reasonable cost of such an article.

With these and other objects in view, which will more fully appear as the nature of the invention is better understood, the same consists in the combination, arrange ment andconstruction of parts hereinafter fully described, pointed out in the appended claim and illustrated in the accompanying drawings, it being understood that many changes may be made in the size and proportion of the several parts and details of construction within the scope of the appended claim without departing from the spirit or sacrificing any of the advantages of the invention.

One of the many possible embodiments of the invention is illustrated in the accompanying drawings, in which Figure 1 is a front elevation of a mill constructed in accordance with the present invention; Fig. 2 is a side elevation thereof; Fig. 3 is a front elevation of the same, its cover being shown in its open position; 4 is a section taken on line 4-4 of Fig. 3; and Fig. 5 is a front elevation of a detail of construction.

In the drawings, the numeral 10 indicates a casing, preferably made of wood, and comprising abottom 11, sides 12, a front13, a rear wall 1a and a cover 15. The cover is hinged to the rear wall at 16, and caused to move from its open into its closed position by springs 17, which are coiled around a rod Specification of Letters Patent.

Application filed July 2, 1913.

-which are adapted to Patented Aug. 11, 1914:. Serial No. 777,004.

18, one end of each spring engaging an eye 19 upon the underface of the cover, while the other end of each spring bears against the rear wall 14 of the casing. The rod 18 extends throughout the width of the casing, and is supported by the sides thereof. The cover is kept in its closed position by suitable fastening devices, for instance a hook 15, pivoted to one of the sides of the casing, and adapted to engage an eye 15", that is at tached to the cover.

In the sides of the casing is rotatably journaled a shaft 20, to which is attached in any suitable manner a grating cylinder 21, extending throughout the width of the casing. This cylinder comprises ends 22, which are disposed in recesses 12 in the sides of the casing, and a cylindrical portion 23, which is provided with a plurality of apertures 23. the edges of which are bent beyond the pe riphery of the cylinder and are roughened in the well known manner in order to grind and disintegrate the cheese or other material coming into contact therewith. The shaft 20 is shiftably arranged in the casing and carries near both of its ends pinions 24, mesh with racks 25, the latter being vertically and slidably disposed in recesses 26 in the sides of the casing. Rotation is imparted to the shaft by means of a crank handle 27, that is located outside of the casing and serves at the same time to shift longitudinally the shaft 20 and the grating cylinder attached thereto. YVhen the shaft is pulled by means of the crank handle 27 outward, the pinions 24 are out of mesh with the racks 25. The parts are held in these positions by means of a lever 28, which is pivoted at 29 to one of the sides of the casing, its free end 30 being hook-shaped and adapted to be placed over that end of the shaft 20 to which is fastened the crank handle. If the hook 30 is disengaged from the shaft 20 and the latter shifted inward, its pinions 24 will mesh with the racks 25, and when then rotation is imparted to the shaft, the racks 25 will be raised, their upper ends, which are normally in engagement with the cover 15, lifting the latter against the action of the springs 17 into the position shown in Figs. 3 and 4 of the drawings. The purpose of this arrangement will be described hereinafter. Obviously when the parts are in the positions shown in Figs. 3 and 4 and the pinions 24: are disengaged from the racks 25, the latter will by their weights drop and permit the springs 17 to act, the latter thereby closing the cover 15.

The grating cylinder can be removed from the casing through an opening 31 in one of the sides 12, said opening being normally closed by a plate member 32. Obviousl before removing the cylinder, that rack 25 which is arranged near the opening 31 must be taken out of the casing. For this purpose an opening 33 is formed in the bottom 11. The cylinder is usually'removed from the casing for the purpose of replacing it with one which has either finer or coarser apertures.

In front of the grating cylinder is disposed within the casing an inclined parti tion 34, which, together with the cylinder, supports the cheese, or other material, to be ground. The material to be ground is placed into the casing through an opening 35 in the front 13, said opening being normally closed by a door 36, that is hinged at 37 to the said front. A vertical partition 38 is arranged above the cylinder within the casing, said partition preventing the unground material in the casing from passing toward the bottom thereof.

The material to be ground is held against the grating cylinder by a follower 39, in the form of a concave, which is attached to brackets 40, the latter being fulcrumed to the transverse rod 18. Springs 41 are attached to the cover 15 and to the follower 39, and serve together with the springs 17 to force the cheese or other material downward with the necessary pressure against the face of the grating cylinder. Should any hard, coarse object get into the material being ground, no injury will result to'the grating cylinder, inasmuch as the follower will be forced upward againstthe action of the springs 41. A blade spring 42 is attached to the cover 15, and bears normally against an upwardly extending lug 43 upon the upper face of the follower 39. This spring acts as an indicator in that it contacts with the upper face of the follower 39 when the material in the mill has been ground.

The ground cheese, or other material, passes through the apertures in the grating cylinder into the same, leaving it through an opening 44, "as the said cylinder is rotated in the direction of the arrow shown in Fig. 4 of the drawings, to fall onto a sieve 45, which forms the bottom of a drawer 46 that is adapted to be inserted through an opening in one of the sides of the casing, and eX- tends throughout the width of the same. Some of the material is carried by the cylinder past the partition 38, falling also into the sieve 45. The coarser particles are kept back by the sieve, while'those which have been pulverized to the proper extent pass through the sieve into a compartment 47, also in the form of a drawer which is. adapted'to be inserted into the casing through an opening 48 in the front 13thereof.

The operation of this device is as follows: The hook 30 is disengaged from the driving shaft 20 and the latter, by means of the handle, pushed inward, thereby bringin its pinions 24 into mesh with the teeth 0 the racks 25. By rotating the shaft, the cover with the parts carried thereby, that is to say the follower 39, areraised into the 7 positions shown in Figs. 3 and 4 of the drawings. The material is then placed into the casing so as torest upon the partition 7 34 and the grating cylinder 21. The shaft is then pulled outward,resulting in a lowering of the racks 25, the springs 17 then forcing the cover toward its closed position, whereby the springs 17 and 41 by the intermediary of the follower 39 exert the necessary pressure upon the material to be ground. lVhen now the hook 30 is engaged with the driving shaft and the latter rotated in the direction of the arrow shown in Fig. 4 of the drawings, the material is pulverized or disinte= grated, dropping in the manner above described onto the sieve 45, and through the same into thecompartment 47.

What I claim is In a grinding mill, the combination with a casing having a cover hinged thereto, of 'a shaft rotatably and shiftably mounted :therein, a grating cylinder fastened to, said shaft, a concave pivotally attached to the casing and being connected to and movable with said cover, pinions upon said shaft, and racks shiftably arranged in said casing bearing against said cover, said pinions being normally out of mesh with said racks and adapted upon the shifting of said shaft to mesh with said racks andto raise the latter upon the rotation of said-shaft.

Signed at New York, in the county of New York, and State of New York, this 30th day of June, A. 13.1913.

. LUIGI DONISI.

Witnesses: i

SIGMUND Hnnzoe, M. FRIEDLANDER.

Copies '0: this patent may be obtained for-five cents each, by addressing the Commissioner o! Patents,

' Washington, D. G. 

